In my experience, it just makes everything easier. You don't have to relay the number across the field to the coach, it sounds more like "what we hear on Saturday and Sunday" which gives us more legitimacy in the eyes of the players, coaches, and fans, and it comes across as more certain and exact to announce that "we saw this specific guy do this bad thing" as opposed to "someone on that team did this bad thing."
You might consider, NFHS games are usually played before a
predominantly LOCAL audience, many of whom may be personally familiar with players, as opposed to those who attend "Saturday & Sunday" games, and have no compelling, or constructive, interest or need to know the identity of which
student athlete is guilty of making each mistake.
If personal legitimacy is a serious personal concern, public exposure of player mistakes is not likely to eliminate that concern, either for players, coaches or fans (although, what "fans" conclude is, or at least should be, beyond our relevant concerns.) Although as previously suggested, identifying the guilty player to his Head Coach, often has beneficial remedial instructive value.
Achieving a perception of certainty or confidence, by players and/or coaches, that the "Call made" was the correct call, is earned far more by consistent performance than publicly announcing which player may be responsible for each mistake.